156A Finals Week

Overview of Status of Analysis, Design, Fabrication, Tests, etc.

• • Decided to pursue the draining mechanism because of its low part count

  • Fabrication of prototype was in process

Accomplishments from Previous Week

• • Fabricated draining prototype

  • Deconstructed Burr grinder

Goals for Next Week (list names after each item). Use specific and measurable objectives.

• • [Winter break], will work over break to possibly brainstorm more ideas to meet the clean-ability and build simplicity requirements

Sponsor Comments from Last Meeting and Actions Taken to Address these Comments (indicate date of comments and if via email or in person)

• • Dec 3

  • Could use Nylon lead screws for lead screw mechanism

  • Broccoli steamer idea needs more thought to be used as an automated cleaner

  • Draining mechanism needs to pump liquid quickly

  • Overall, the draining mechanism was the best to pursue given our project requirements

  • Canisters may not have to be cleaned all the time, realistically

  • JC finds it easy to clean everytime, Grant hates cleaning it every time

  • Look at the Clover Press machine for inspiration

Instructor Comments from Last Meeting and Actions Taken to Address these Comments  (indicate date of comments and if via email or in person)

• • Sketch out and decide what brewing module design to pursue

  • Instructor was happy with the chosen design, the draining mechanism

Comments from Other Students in the Class (indicate date of comments and if via email or in person)

• • N/A

Risks and Areas of Concern

• • Draining mechanism with a peristaltic pump might be too slow

  • A pump that is fast enough might be extra expensive

Resources or Information Required but not Available

Schedule

• • Draining mechanism prototype (Finals week)

  • Heat water to 205 +/- 2 F (week 2)

  • Achieve consistent and repeatable grind size (week 2)

  • Drain brew chamber in 30 seconds (week 3)

  • Add water to brew chamber autonomously (week 5)

  • Add beans to chamber autonomously (week 5)

  • Run complete cycle (week 7)

  • Work out kinks (week 8)

  • Make prototype aesthetically pleasing (week 9)

  • BOM (week 10)

Budget (list amount spent and amount remaining)

• • Off-the-shelf burr grinder ($34.40)

Progress on Report and Webpage

• • Steadily populating as documents are developed

Gantt Chart

    (click on image for detailed view)